Issue 4, 2011

Orientation dependence for Br formation in the reaction of oriented OH radical with HBr molecule

Abstract

The orientation dependence of Br-atom formation in the reaction of the oriented OH radical with the HBr molecule using the hexapole electrostatic field was studied. Experimental results for the orientation dependence in the reaction were analyzed using a Legendre polynomial fit. The results show two reactive sites. It was found that O-end attack is most favored for this reaction, and that H-end attack also shows a pronounced reactivity. The reactivity of the side-ways attack was found to be small. By comparing the results of the orientation dependence in the reaction with studies of inelastic collisions and theoretical calculations, two reaction pathways are proposed. Reaction by O-end attack is followed by a direct abstraction of the H-atom from the HBr molecule. The mechanism for H-end attack may have H-atom migration from HBr to form the water molecule.

Graphical abstract: Orientation dependence for Br formation in the reaction of oriented OH radical with HBr molecule

Article information

Article type
Paper
Submitted
06 Jul 2010
Accepted
11 Oct 2010
First published
25 Nov 2010

Phys. Chem. Chem. Phys., 2011,13, 1419-1423

Orientation dependence for Br formation in the reaction of oriented OH radical with HBr molecule

P. Tsai, D. Che, M. Nakamura, K. Lin and T. Kasai, Phys. Chem. Chem. Phys., 2011, 13, 1419 DOI: 10.1039/C0CP01089H

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